When animal cells undergo cell division, several cellular structures aid the the movement of chromosomes into the two new daughter cells. what are these cellular structures? a) dna and the resulting transcribed rna. b) nucleolus and the proteins it produces. c) centrioles and the spindle fibers they produce. d) smooth er and the proteins produced and packaged there.

Covalent bonds are formed between metals and boiling points true or false

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.